package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeEditPassWordDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

@Service
public class EmployeeServiceImpl implements EmployeeService {


    private final EmployeeMapper employeeMapper;

    @Autowired
    public EmployeeServiceImpl(EmployeeMapper employeeMapper) {
        this.employeeMapper = employeeMapper;
    }

    /**
     * 员工登录
     *
     * @param employeeLoginDTO 登录实体
     * @return 员工信息实体
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传递的明文密码进行md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO 员工实体
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置账号状态 默认正常 1正常 0锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码 默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes())); //常量引用
//        //设置创建记录时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        //设置当前记录创建人的id和修改人id
//        employee.setCreateUser(ThreadLocalUtil.get());
//        employee.setUpdateUser(ThreadLocalUtil.get());
        employeeMapper.insert(employee);
    }


    /**
     * 分页查询所有用户
     *
     * @param employeePageQueryDTO 查询实体
     * @return 返回所有用户实体列表
     */
    @Override
    public PageResult<Employee> getAll(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        //统一返回值类型page<T>
        Page<Employee> employees = employeeMapper.getAll(employeePageQueryDTO);
        return new PageResult<>(employees.getTotal(), employees.getResult());
    }

    /**
     * 启用禁用员工账号
     *
     * @param status 1启用 0禁用
     * @param id     用户id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     *
     * @param id 员工id
     * @return 员工数据实体
     */
    @Override
    public Employee findByIdGetEmployee(Long id) {
        return employeeMapper.getById(id);
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //将对象的属性值赋值给employee
        BeanUtils.copyProperties(employeeDTO, employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(ThreadLocalUtil.get());
        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     *
     * @param passWordDTO 修改密码dto
     */
    @Override
    public void updatePassWord(EmployeeEditPassWordDTO passWordDTO) {
        employeeMapper.update(Employee.builder().id(passWordDTO.getEmpId()).password(DigestUtils.md5DigestAsHex(passWordDTO.getNewPassword().getBytes())).build());
    }
}
